From 7e2fbe670ac66bc77470facfd8471ba2f0e1e153 Mon Sep 17 00:00:00 2001
From: Paul Kehrer <paul.l.kehrer@gmail.com>
Date: Fri, 26 Jun 2015 17:59:05 -0500
Subject: test notimplementederror for unsupported csr extensions in backends

---
 src/cryptography/x509.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/cryptography/x509.py b/src/cryptography/x509.py
index 21e18ddd..24d501e5 100644
--- a/src/cryptography/x509.py
+++ b/src/cryptography/x509.py
@@ -1468,6 +1468,10 @@ class CertificateSigningRequestBuilder(object):
         """
         if isinstance(extension, BasicConstraints):
             extension = Extension(OID_BASIC_CONSTRAINTS, critical, extension)
+        elif isinstance(extension, SubjectAlternativeName):
+            extension = Extension(
+                OID_SUBJECT_ALTERNATIVE_NAME, critical, extension
+            )
         else:
             raise NotImplementedError('Unsupported X.509 extension.')
         # TODO: This is quadratic in the number of extensions
-- 
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